MHT CET Physics question

Not in JEE Advanced syllabus

The main distinction between conductors, semiconductors and insulators is concerned with

(A)binding energy of free electrons
(B)work function of free electrons
(C)width of forbidden energy bandCorrect
(D)temperature coefficient of resistance

Answer: (C)

Solution

The three classes differ in the width of the forbidden gap between the valence and conduction bands (zero or overlapping for conductors, about 1 eV for semiconductors, several eV for insulators); binding

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Question ID VK-084985